Every spy has a beginning, and for Colonel Aleksandr Talanov of the KGB, that moment occurs one summery night in 1985 on the Costa del Sol, at the height of Cold War tensions between the Americans and Soviets.As a signatory to the Biological Weapons Treaty of 1972, the United States had already destroyed its military stockpiles of weaponized pathogens. The Soviet Union, however, responded differently to the signing of that treaty. They created a network...